This 2003 GMC Yukon came in with the complaint that the blower was doing weird things. The blower sometimes would not turn off when the ignition was turned off. Also sometimes the blower worked and sometimes it did not. Withe the local temperature expected to top off at over 100 degrees F and the the … Continue reading “2003 GMC Yukon Bower Erratic / Not Working”
This 1998 Chevrolet C1500 came in with a no blower complaint. The starting place for testing is at the blower motor. The blower motor is located behind the passenger side of the dash and is accessed by removing the glove box. After opening the glove box there are two retainers that have to be dealt … Continue reading “1998 Chevrolet C1500, Changing The Blower Motor”
Last of a three part post on Chevrolet and GMC full sized truck and suv blower issues. The best place to start testing is at the blower motor. Key on and blower set to high. Check for power on the purple wire and ground on the black wire. If power is missing on the purple … Continue reading “1997 GMC C1500 Pickup, No Blower Part 3”
Second part of a multi-part repair post on GM truck blower systems. The blower resistor and the blower relay are located on top of the heater case. Behind the glove box. After opening the glove box, there may be two retention systems present. Sometimes there are plastic cables that are attached to the sides of … Continue reading “1997 GMC C1500 Pickup, No Blower Part 2”
This 1997 GMC C1500 came in for some other a/c service and I asked the customer about the blower working. He said it worked fine and asked why I wanted to know. I told him of the endless requests that I get for information on the blower systems on these trucks and how I wanted … Continue reading “1997 GMC C1500 Pickup, No Blower Part 1”
This 2004 Chevrolet Silverado came in with the complaint that the blower motor will not turn off even with the key off. This is relatively common problem of the the full sized Chevrolet, GMC and Cadillac trucks with auto a/c controls. The first step is to lower the passenger side hush panel under the dash. … Continue reading “2004 Chevrolet Silverado, Blower Will Not Turn Off”
This 2000 Chevrolet Silverado came in with a complaint that there was not much air coming through the vents. The customer said he thought the blower motor might be worn out. A quick look under the dash and I saw that this truck has a cabin air filter. I removed the single screw at the … Continue reading “2000 Chevrolet Silverado, Changing The Cabin Air Filters”
I have been asked many times about the auto blower control on 2003- 2007 Chevrolet Silverado Classic and GMC Sierra Classic trucks so I decided to take some readings on my truck. This also applies to the Tahoe, Yukon, Avalanche, Escalade and Suburbans of the same era with auto a/c controls. The blower control processor … Continue reading “2003 Chevrolet Silverado, Blower”
I have been asked several times how to change the blower motor in later model Chevrolet and GMC Full sized trucks as there are no mounting screws. This includes 2003 through 2007 Classic series trucks. There is a locking tab that has to be pulled down past the stop and then the motor assembly can … Continue reading “2007 Chevrolet Silverado Classic, Changing The Blower Motor”
This is a very common problem on 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 and 2007 Chevrolet Silverado and GMC Sierra trucks. Over a period of time the resistor and usually the connector overheat and blower operation stops in some or all speeds. The blower resistor is located on the passenger side of the … Continue reading “2005 Chevrolet Silverado Blower Inop”